As per her website, British alt-rocker PJ Harvey says she has an announcement that will be leaked on the 23rd of this month.  That said, she won’t actually say what it is other than that it’s coming.  So stay tuned for more.  This image was released yesterday on her website:

It seems to be either some sort of cryptic clue about what she’s about to announce or some sort of strange structure for a song or perhaps both.  We can only wait and see.